Perform daily monitoring, health checks, and capacity management of Kubernetes clusters; track node CPU/memory/disk utilization, Pod status, and database/middleware metrics; handle alerts, collect logs to identify risks, and execute scaling or disk cleanup as needed; Respond to monitoring alerts and business feedback; troubleshoot failures of K8s nodes, middleware components, and application instances; perform fault isolation, hardware decommission and repair, workload migration, and capacity expansion to ensure fast recovery; Maintain databases and middleware including MySQL/MongoDB/PostgreSQL/Kafka/RocketMQ/Redis/Nacos; perform backup/restore and disaster recovery drills; manage gateway configuration including domains, routing rules, and certificates; Own application initialization, version releases and configuration changes, elastic scaling for traffic fluctuations, and application migration during node failures; maintain a high change success rate; Manage permission provisioning for middleware and databases, servers/network/Infra consoles, and account synchronization to keep daily operations requests handled efficiently; Drive production safety and security: vulnerability remediation and hardening, incident coordination, severity assessment and postmortems, emergency response, and day-to-day operations support; Own data onboarding and operations for Infra stability platforms, covering device management, energy monitoring, emergency drills, and key process control; support platform iteration and ensure data completeness and accuracy; Ensure the stability of operations platforms deployed in an independent cloud environment; build platform monitoring, emergency playbooks, and incident response mechanisms; drive high-availability architecture and disaster recovery capability. The role covers day-to-day operations of Kubernetes clusters, databases and middleware, and application releases and changes, as well as data onboarding and operations for Infra stability platforms, ensuring business platforms run stably in an independent cloud environment.